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8030 Appendix T3 Groundwater Protection |
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1.0
Introduction
Groundwater is present in a shallow aquifer below Jefferson Lab. The laboratory has structures, including two operational accelerators, at or below the water table that have the potential to impact the groundwater. To mitigate actual and potential impacts to the groundwater, the laboratory, under its Environmental Management System (EMS), has instituted a comprehensive site wide groundwater protection program. This program addresses:
This groundwater protection program complies with Federal government and
Commonwealth of Virginia groundwater quality laws and regulations and two
permits: VA0089320 (ground and surface water quality) and GW0047200
(dewatering). The program also implements
the contract requirements of DOE Order 458.1, Radiation Protection of the
Public and the Environment.
The
purpose of the Groundwater
Protection Program Plan (EPS 31) is to minimize the facility’s impact on
groundwater resources, primarily through a comprehensive site-wide groundwater
monitoring program that identifies and assesses the effect of current and
future activities on groundwater quantity and quality.
2.1
Supervisor/Subcontracting
Officer’s Technical Representative (SOTR)/Sponsors
·
Inform
the Facility Manager or designee (876-1750) of any unusual event or activity
that could potentially result in groundwater contamination, such as unusual
disturbance near a monitoring well.
2.2
Facilities
Management and Logistics Department
·
Maintains
pumping/plumbing equipment at the end stations to prevent flooding of the
experimental halls and soil and/or groundwater activation.
·
Ensures
that any expected dewatering for construction projects is reviewed for permit
applicability, and, as required, obtain a permit or other authorization.
·
Involves
Radiation
Control Department (RadCon) in any
discussion regarding problems or changes to the end station dewatering system.
·
Rectifies
issues that could result in groundwater degradation.
Has the primary responsibility
for implementing the following actions detailed in the Permit to Withdraw
Groundwater GW0047200:
·
Ensures
the groundwater dewatering pit is properly maintained and that the flowmeter is maintained to meet permit requirements.
·
Notifies
Environmental, Safety, Health, and Quality (ESH&Q) to obtain Virginia Department
of Environmental Quality (DEQ) approval prior to making any construction or
pump setting changes to the pit.
·
Posts
the dewatering permit information at the dewatering pit.
·
Records
flow values and provides monthly flow reports on or about the first of each
month to the ESH&Q Associate Director.
2.3
Hall/Accelerator/FEL
Operations Managers
·
Operate
the accelerators and end stations in accordance with the Final
Safety Assessment Document to minimize impacts to soils and groundwater.
2.4
ESH&Q
·
Manages
the arrangement and/or performance of the accelerator and experimental area
radiological and permit-related non-radiological monitoring of site
groundwater.
·
Provides
the completed GW0047200 quarterly report and VPDES monitoring data (VA0089320) to
the Thomas Jefferson Site Office (TJSO) in advance of the permit due date.
·
Provides
requests for dewatering well setting changes or other such notifications
required by GW0047200 to the TJSO to obtain DEQ approvals when requested.
·
Ensures
the requirements of the GW0047200 Water Conservation and Management Plan are
incorporated into associated program documents.
·
Makes
determinations about permit requirements for construction projects requiring
dewatering.
·
Manages
the disposal of activated water to ensure it does not migrate to the soil
and/or groundwater.
· Input sampling and other information into the DEQ Database and inform TJSO.
3.0
Summay of Groundwater Protection Program
The four operational concerns that could potentially
impact groundwater are:
Jefferson Lab’s groundwater protection program is a comprehensive
site wide groundwater assessment strategy to minimize the effect of current and
future Lab activities on groundwater quantity and quality.
This program includes:
The potential activation sources of most concern (the Halls and
the Beam Switchyard) were the basis for design of the Jefferson Lab groundwater
monitoring network. Since groundwater
activation and transport occur over a relatively long time frame, retrospective
sampling and analysis is adequate for identifying and mitigating problems. Wells are sampled twice yearly under the terms of the
VPDES Permit for the radiological parameters Tritium, Beryllium-7, Sodium-22,
and Manganese-54.
No activation is expected under the end
stations, the site of the groundwater collection network. The
dewatering operation provides for collection and discharge through a pump
network at the Counting House. The water is sampled annually for Tritium,
Beryllium-7, Sodium-22, and Manganese-54. Additional samples are continuously
collected and analyzed by RadCon.
4.0
References
ES&H Manual:
2410 Hazard Issues and
Contractual Commitments
2420 Permits and
Authorizations from External Agencies
EPS 31 Groundwater Protection Program Plan
5.0 Revision Summary
Revision 0.1 – 12/11/12 - Updated to reflect compliance with DOE Order 458.1 Radiation Protection of the Public and the Environment.
Revision 0 – 04/28/09 – Original Content.
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ISSUING
AUTHORITY |
TECHNICAL POINT-OF-CONTACT |
APPROVAL DATE |
REVIEW
REQUIRED DATE |
REV. |
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ESH&Q
Division |
04/28/09 |
04/28/12 |
0.1 |
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